Specifications include, but are not limited to: Provide all necessary labor and materials to perform the following: Replace vintage 1984 -480 volt K-Line ITE (Brown Boveri Electric) draw-out, manually operated circuit breakers in existing outdoor walk-in enclosure. Total of 10 (Ten)- 800 amp frame units shall be updated to new 800 ampere 100% rated power circuit breakers with same local manual control and indicator functions to match existing. Provide modifications to the existing cell enclosures along with a new door and all other accessories as needed. Units shall be rated at a minimum of 42,000 symmetrical amperes interrupting and short time. Provide new electronic trip units with LSIG (Long time, Short Time, Instantaneous & Ground fault). Trip settings will be furnished by MSD for input (and any possible programming if needed) by the circuit breaker provider.